Straightway dry-pipe valve.



w. C, BRYCE.

STRAIGHTWAY DRY PIPE VALVE.

APPLICATION FILED MAY I8, 1916.

1,200,307. Patented (M. I), 1916.

. I law 102% W/LL/AM CBRYOE v I A TTORNE Ys.

relate "Iiiderfto" more structien,

"tion, rf lvnce 'sh e subject of the er: Grea Bri a n Rename n en dnite t i reigh w 'P" tien showingctheielve a closed nd i r e i t e? Broad then ii v v in aree ubetween the ftw'o ilowerqori'water. -'-lfheidili'erenoe themecl ani'calj type, But? it' is' 'ob]ect1onab1e "eneu 'ihbt= ulk'iwhie r u ts theffact'thattliefleir seat m st beep xi; f -.thel-jweter;

of tel The" valves .and leverages are; so propor ve times: the erea; o

'f'ith srnnren'rwnx Jo nt-ruin VA VE. I

iai'mw above".

' 7 her, oppositely acti .lev'er et joppoeitelsid v c n r lling e mai rl'kwatr'inlet and by-pass (actions between controlling the 1 the air-valve nndth fierentlal" main vWaiter inlet. .1{ rail disclopass -'section 4 leading from 'nectiom The inner end of the-by-pass is provided with a-5va1ve; ,tj ,5 th e d d therei'n'to. and adapted to seat or receive the by-pass valve' 6 carried'on the outer end Ofan are'uete arm 7 froii1' which extends a" sli orternrcuate arm 8 pivotelly mounted on e pin"9*in the wallsof the section .-1. At "-="the' poi nt of junction, arms 7 and Sam en- 'ler'gedfand bored out, as at 10, and internally threaded, to receive a threaded rod 1 9.5 a r tweenx its'lower end, and a main ater J item.12 c tro11img the, main water inlet.-

l The upper end is provided with a bolt head .f13,; h avm aconical tip l4,' for e vpurpose toxbe later disclosed; f- The arms 7 and 8 con- 1* stit'utejanv elbow lever which isg'fulcrumedat f a pointgsubstantially 1 midfway' vbetween the {valves 6- .and 12, carried .by'lits op osite exv f;.epeefi mn i fle mm Pat'nted oci3. f3, 191e"I; I meantime 1s L sle. 's' rianlo;ss,a57." I i7: 1

Fth'e hie nfwater valVe', ,a-nde Smaller velve mnreme BRYCE, or. 'MQNTREAL, eiI'EBEc, CANADA.

nitheflbypas's; withvjlevers connecting the nthe eform mventienm ema a lever mounted aliieecerri'ed by said "of *itf'f fulcrum and inlet, respectiv ly; "and Ya The teasing contamln eting mechanism coneists,; fpreferably, of

two castings .or .section's1 v and 2. The sec- In the 'f e ali tion11'is provided .with the inlet connection 3' leading from the water main and thebys the inlet conalYes inn-th t? when": the hy -pes's valveiwas 5 f-mw p0 'tion it held the lnain Water valve'f' l= w te jelveppen i diretly intb theieiresys (ma -and;- this-is consideredobjectionable; It; A S i eesi ed adv a le .t if v aan' interme-i die-ta hamber between'the-wet s stem below? pi evalve aiidpthe eir,'sy s'tem he jirsent invention mteachambefbetweeh d the 'rwv lv r rinedietemhambegk intermediate chame entire oper-' 't'remities end seating in opposite- 'rections.

water inlet valve jis n the: enden y fertile-main wa ter'-- 1 air valve 19 isused. 'It' is directly above"the" main water valve and on the same center line, providing a straight waterway. It is pivoted at one sideof the inlet leading from the valve chamber into the air chamber 20, and the air chamber is enlarged atthat side as at 21, to permit the air valve to swing back completely out of the path of the incoming current of water, as. in-the 'dotted' line position; i The lower face ofthe air valve is provided with an internally threaded boss 18 to receiveanuadjusting'bolt 17 which is provided with a nut head 16 hav-' ing a conical socket 15 to receive the conical tip 14. By-pass, -valvekand levers are so' proportioned,v relatively to the areas of valves 12 and 19, that the-pressure on 19'.

V bears the ratio of? to r as compared to the -fresultant pressure on the balanced valve, 20

when the system is in operation. Hand holes 22,- 23, and 24' are provided for access to the operating parts. and a 'small outlet'25is provided in section- 1 just "ab'out on a level with {the main water inlet; 25* age should that occur, but is more especially provided to allow entrance fotair so that This permits the escapelof any slight leakatmospheric pressure vwill be maintained within the ,valvejcha'lnberr I In setting the valve, the? elbow lever will be swung on its, fulcrum untilvalve 6 is I accurately'seated, then,v if valve 12 is not quite accurately seated,ctherod' 11 will be rotated until the valve does'accurately seat.

Next, the air valve will'be swun toward its full line position so} that, con cal tip ,14

" enters socket '15, ;.,Thenthe'air is pumped in above valve 19. Then the bolt 17 will be rotated'until' there is a-slight tension. fAnd,

qfinally, water isturnedon from the main -'below the balanced valve. When the air pressure is reduoedbelow the predetermined point, the water pressure kicks valve 12 open and drivesval've 19 to its dotted line L positionas it rushes'into the system. Valve 7 fi'gravitates to, the dotted line position 1 and m aintainsi valve-12in its dotted line position. Thus, all valves are kept completely out of the path of the incoming current of water and there is provided a straight water way with no danger of "water columning.

' .l As will be seen, the swing of valve 6' through 'by-pass 4 has a dash pot effect which slightly cushions the downward swing.

;Adjustment of valve 12 is necessary only occasionally to compensate for wear, after 1 the first regulation.

Among the objects attained by the present invention are, a straight water e pllclty, lightness of construction, e ciency, compactness, durability, and absolute certantyoffautomatic operation.

c ation, and use of thejinvention will be c ear from the" preceding, detailed description,

It is thought that the construction, 0 er- Ghange's may be made in the construction,

arrangement, and disposition of the several partsof theinvention without in any way departing from the field and scope of the csameand ,itis meant to include all such a pre-' within this application, wherein only ferred form has been disclosed.

' Having thus described my invention, what I claim and desire to protect'by Letters Patent of the United States is 1. In straightway dry-pipe valve mechanism, a casing containing an upper air chamber having an outlet and a lower valve chamber having two inlets, in combination with an..air valve controlling communication between said chambers, a main-inlet pipe connected to one of said inlets, a bypass extending'from this main-inlet pipe t0 the other inlet, a lever arranged in said valve chamber and provided with two arms vby-pass valve down through said by-pass.

2. In straightway dry-pipe valve mechanism, acasing containing an air-chamber having an outlet, a valve chamber below said air chamber and a main water inlet and bypass water inlet in the bottom of said valve chamber, in combination with a main-inlet pipe connected to said main inlet, a by-pass extending from said main-inlet pipe to said by-pass inlet, an air-valve controlling passage from said valve chamber to said air chamber, a mam lnlet valve closing said "gm ain inlet, a by-pass valve operating reversely to said. main inlet valve, a lever in said valve chamber provided with arms which carry respectively the two latter valves arranged so that one of these valves will partly balance the other under pressure.

' 3. In straightway dry-pipe valve mechanism, an air chamber having an outlet, a

valve chamber below said air chamber, communicating therewith and provided with a main water inlet and a by-pass inlet, in combination with valves for said inlets and a lever to which they are attached so that the pressure on the by-pass valve partly balances the pressure on the main inlet .valve, a main inlet pipe and by-pass connected with said inlets respectively, an adjusting device for the main-inlet valve acting on .sald lever, a hlnged air valve closing communication between said air chamber and said valve chamber, and a device carried by said valve and bearing in its closed position on said adjustable device.

- 4. In straightway dry-pipe mechanism, an

air chamberand a valve chamber communieating therewith and having two inlets, a lever in said valve chamber carrying two valves arranged to-close said inlets and to act in opposition to each other, an airvalve closing communication between the said chambers, a depending part connected to said valve and adjustable toward and from the latter and a part mounted on said lever against which said adjustable part bearsin its lowest position.

5. In straightway dry-pipe valvemechanism, an air chamber having an outlet and a valve chamber communicating with said air chamber and having two water inlets, in combination with an air valve in said air chamber closing communication between the two chambers, an adjustable bolt depending from said valve and provided with a conoidal recess in its head, a rod having a conoidal head for entering said recess and makingcontact without positive connection, a pair of valves for closing the water inlets and a lever having said rod and pair of valves attached thereto, these valves and lever being arranged for said valves to act in opposition to each other in order that the pressure on the air valve may need to resist only the amount of pressure on one of said inlet valves in excess of the pressure on the other inlet valve.

6. In straightway dry-pipe valve mechanism, a casing containing two communicating chambers, the upper being an air chamber provided with an outlet and the lower being a valve chamber provided with two inlets, in combination with a valve in said air chamber closing communication between the two chambers, a lever pivoted in said valve chamber and provided with an arcuate arm to which a valve is attached for closing one of said inlets, another arm extending in the opposite direction from its fulcrum, and secured to the end of the first mentioned arm remote from its valve, a valve closing the other inlet and an adjust able device suspending the last named valve from the latter arm, these inlet valves operating in opposition to eachother.

7. In straightway dry-pipe valve mechanism, a-casing containing an air chamber havlng an outlet and a commumcatmg 'lower valve chamber having two inlets, a

pair of inlet valves and connected means whereby these valves close said inlets, actto the by-pass inlet, and an air chamber with.

an inlet communicating with said valve chamber, an elbow lever fulcrumed in side valve chamber at a point between said bypass inlet and said main inlet and provided with an enlargement at its elbow, said enlargement being provided with a longitudinal bore, a rod adjustable in said bore, a main inlet valve carried thereby, a by-pass valve carried by said elbowlever at the opposite side of its fulcrum and an air valve in said air chamber, connected to said rod,

9. A straightway dry-pipe valve comprising, a casing having a valve chamber provided with main and by-pass inlets, a main inlet pipe, a by-pass leading from this pipe to the by-pass inlet, and an air chamber with an inlet communicating with said valve chamber, an elbow lever fulcrumed in said valve chamber at a point between said bypass inlet and said main inlet and provided with an enlargement at its elbow, said enlargement being-provided with a longitudinal bore, a rod adjustable in said bore and providedwith a conical 'tip, a main inlet valve carried by said rod, a by-pass valve carried by said elbow lever at the opposite side of its fulcrum, an air valve in said air chamber," and an adjusting bolt carried by said airvalve and provided with a bolt head having a socket to receive the aforesaid conical tip of the rod of the main inlet valve. 

